Let's start! Use a food processor or a grater to grate the pumpkin coarsely. Place it in a strainer and leave it there to strain all the water. In the meantime let's prepare the dough for the phyllo. In a bowl place the flour, the olive oil, the vinegar and the salt. Slowly add the water while knitting with your hand. You may need to use more or less water depending on the flour you use. Keep knitting with your hands and transfer on a flat surface. Knit until the dough is elastic and not sticking to your hands. Make the dough into a shape of a ball, cover it with a towel and let it rest for 15 minutes. Now let's make the filling. Squeeze as much of the excess liquid that has remained in the pumpkin. Place the pumpkin in a bowl and add all the ingredients for the filling. Mix well. Don't worry if more liquid is released when you add the sugar. It is normal. Preheat the oven to 180 degrees celsius. ​Now let's make the phyllo. Take the dough and make a thick string out of it about 50cm long. With a knife cut 8 pieces and make 8 round small balls. Now let's make each one of the 8 phyllo. Start with one ball. Flatten it with your hand to make a small circle. Take the rolling pin and flatten it more. Roll the dough around the rolling pin and with your hands start from the middle moving outwards to increase the diameter of the circle. Keep dusting the phyllo with flour so it is not sticky. There is a video you can watch under the eggplant pie category. Keep turning the phyllo until and repeat the process until the diameter of the circle is about 50 cm. Once you are done take about 3 spoonfuls of the filling and place it about 5cm inward from the edge of the phyllo circle. Fold the phyllo once, and then over the filling. Then roll all the way to the other end. Take a round baking tray 40cm in diameter and brush it with olive oil. Make the role that you had into a shape of a snail and place it in the middle of the baking tray. Move on to the second roll. Once you make the second one continue from the end of the last one and keep making a snail shape. Once all the phyllo are rolled take the milk and pour it over the pie. Then melt the butter and brush the pie with the whole butter evenly. Place it in the oven and cook for 50 minutes. Once it is ready remove from the oven and let it cool a little. Cut in triangles. Serve warm and dust with powdered sugar and cinnamon. Enjoy!